Service difficulty report · Terminal Block · Boeing 737823

Difficulty date
December 10, 2019
Submitted
December 12, 2019
Operation
Air carrier
Aircraft
N877NN
Make and model
Boeing 737823
Aircraft serial
31131
Aircraft time
25,888 hours, 10,598 cycles
Part
Terminal Block
Part number
M817143DXX
Condition
Burned
Location
Nlg
Stage of operation
AP
How discovered
O
Nature of condition
B, J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: PILOT REPORTS PSEU LIGHT ILLUMINATED ON FINAL APPROACH. MULTIPLE LIGHTS ILLUMINATED AND FLASHED ALSO (AFT DOORS, LANDING GEAR LIGHT). MAINTENANCE FOUND BURNT TERMINAL BLOCKS AT TB 40 NOSE GEAR SENSORS. REPLACED ALL THREE TERMINAL BLOCKS AT J37 PANEL. PSEU BITE TEST PASSED, NO FAULTS IAW AMM 32-09-10. TAXI LITE OPS CHECKS OK IAW AMM 33-45-01.